索引号
P - Language and Literature
54
N - Fine Arts
18
B - Philosophy, Psychology, Religion
10
H - Social Science
8
F - General American History
6
M - Music
6
Q - Science
6
K - Law
4
L - Education
4
G - Geography, Anthropology, Recreation
3
J - Political Science
3
S - Agriculture
2
T - Technology
2
C - Historical Sciences
1
R - Medicine
1
Z - Library Science
1